3-Nonen-2-one,6,8-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-[(2S,4S,5S,6R)-6-[(1S)-2-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-methylethyl]-2-(4-methoxyphenyl)-5-methyl-1,3-dioxan-4-yl]-5,7-dimethyl-, (3Z,5S,6S,7S,8S)-